Drain trap



H. HAVRENIUS ct. El, AE949.

DRAIN TRAP Filed June l, 1944 INVENTOR:

VAE B Patented Oct. 11, ieee UNiTsnfsrAres l`iaarrsuri oF-Fice Application J' une 1, 1944, VSerial No. 538,259

In Sweden March 10, 1943 VThe present invention `vhas for its object a water seal Yor trap for drain pipesV leading from -wa's'h basins, kitchen-sinks and similar installat'ions. The object of such a trap is, as known, jtoprevent "obnoxious gases to penetrate into the house from the sewer. This is realized by giving 'the trap channel an S-shaped bend, so that a receptacle is formed in which part of the water that iiows through Ythe pipe is retained.- The Water-surface is--here divided by a depending partition-wall which together with the water in the bend forms an ostruction for gases in the drain'pipe. v Y

A Well known disadvantage of presenttraps-is the fact that they frequentiy become clogged by dirt which accumulates in the trap. This is particularly the case with traps having a narrow passage and which are subject to contamination Yb'y'rfat'and slimy substances, such as traps on kitchen sinks, lavatories and the like. The impurities form gradually increasing deposits on the inner-wall of the trap-so that the water pase sage is nally more or less completely obstructed. For this vreason vit is necessary from time to time to .unscrew the rinse-stcppers which are provided on the trap and which furthermore are often diii'icult to remove on account of sticking due to corrosion, in order to empty the trap from its contents. The ill-smelling gases are hereby permitted to freely escape from the sewer into the room while the unhygienic rinsing of the trap is carried out, using bent or flexible metal wires or similar unhandy instruments. The use of corrosive chemicals for the same purpose often presents great dangers to the unskilied persons mostly employing them in the homes.

The present invention aims to remove the tedious, unhygienic and expensive disadvantages connected with the rinsing of present day drain traps, and to limit the rinsing operation to such a simple measure that it may without the slightest diiculty be carried out by any person.

Hitherto known drain traps are of a completly rigid structure. The traps are as a rule made of cast iron or some other metal. According to the present invention the trap is instead made elastic, so that it may be deformed and will again resume its original form after the deformation. The trap may, e. g., be entirely made of rubber, so that the walls can be deformed by being squeezed or pressed. By this temporary change of the cross section of the trap the deposits are caused to detach and are broken up by the working and pumping action brought about, so that they will afterwards be easily flushed out 7 Claims. (Cl. l82-7) by the water passing through the pipe. My trap is constructed with a hollow receptacle Yof Vvgen-- erally tubular shape, Van inlet socket member and an outlet socket member connected with said receptacle and an inner depending wall serving Ito partition the interior of said receptacle into a downwardly extending passageway a-nd an up- Wardiy extending passageway, said -passageways `being in ropen communication at -theirlowerends to form a water seal and a continuous passageway Vconnecting said inlet socket member with saidoutlet socket member, said receptacle being constructed of a plastic elastic 4material which is sufiiiciently resilient toyield to deformation by the hand so that slime and other matter Vpre'ci'.-pitated inside said trap may be loosened therefrom by squeezing the recepta-cleby hand so asto temporarily deform the same.

In the accompanying drawing 'there is shown more or less diagrammatica'lly a-noperative embodiment of the'invention. Y Figjl-is a. `vertical section of a drain trapof the usual 'type but built l-of elastic,ma-teriai,` e. g., rubber. `Rinse plugs are omitted since they are superfluousunder these circumstances.

Figs. 2, 3 and 4 are intended to explain the way in which the trap according to the invention functions in respect to the rinsing of the same.

Fig. 2 is a vertical section of a rubber trap which has become clogged. Fig. 3 shows the manner in which the trap is squeezed by the hand and Fig. 4 shows the way in which the clogging contents of the trap are broken up by this squeezing. When the squeezing ceases the trap will resume its original form, e. g., as in Fig. 1.

In order to facilitate the connecting of the trap to the drain pipe and to improve the tting so as to prevent leakage, the inner edges of the sockets shown generally at I are suitably provided with inwardly projecting annular ribs 2 and a shoulder 3, as shown in Fig. l. The ribs in the sockets are adapted to fit over and to grip the ends of a drain pipe.

As already mentioned, the trap is suitably made of Van elastic material which may be easily deformed by the hand, e. g., soft, elastic rubber. The trap may, in this case, with particular advantage be made of a multiply material of this character, e. g., in such a manner that the inner wall consists of a particularly resistant rubber of special quality or of a plastic or elastic synthetic resin or the like, which is capable of withstanding attacks from alkali, acids or other corrosive and abrasive substances, whereas the outer ply or plies suitably consist of canvas, wire netting or the like, embedded in elastic rubber or other suitable elastic material.

I claim:

1. A trap for drain pipes and the like which comprises a hollow receptacle of generally tubular shape, an inlet socket member and an outlet socket member connected with said receptacle and an inner depending wall serving to partition the interior of said receptacle into a downwardly extending passageway and an upwardly extending passageway, said passageways being in open communication at their lower ends to form a pocket adapted to hold a water seal and to form a continuous passageway connecting said inlet socket member with said outlet socket member, said trap being adapted to be connected in the drain pipes of sinks and the like, said receptacle being constructed of an elastic plastic material which is sufficiently resilient to yield to deformation by the hand so that slime and other matter precipitated inside said trap may be loosened therefrom by squeezing the receptacle by hand so as to temporarily deiorm the same.

2. The trap of claim l wherein said inner depending wall is also constructed of said elastic plastic material.

3. The trap of claim 1 wherein said socket members and said inner depending wall are constructed of said elastic plastic material and integral with said receptacle.

4. The trap of claim 1 wherein said receptacle is formed from several plies, one of which is a flexible woven material.

5. The trap of claim 1 wherein said elastic plastic material is rubber.

6. In a water trap for drain pipes and the like, a receptacle having a tubular outer wall of elastic plastic material, said receptacle being provided with inlet vand outlet socket members for attaching the same to a conduit for liquids so as to form part thereof, an interior bailie wall depending from the upper portion of the receptacle wall adjacent the inlet socket member of said receptacle, said baiiie wall together with the receptacle wall forming a pocket for holding a liquid seal in which the baie contacts the liquid with both surfaces, said receptacle and baille being sufciently resilient to yield to deformation by the hand so that slime and other precipitate on the surfaces of said baille and receptacle which contact the liquid seal may be loosened therefrom by squeezing the water seal by hand so as to temporarily deform the same.

7. A trap for the drain pipes of sinks and the like which comprises a hollow, ilexible receptacle of generally tubular shape, exible inlet and outlet socket members integral with said receptacle and provided with interior annular ribs adapted to fit over and to grip the ends of a metal drain pipe, an inner depending wall serving to partition the interior of said receptacle into a downwardly extending passageway and an upwardly extending passageway, said passageways being in open communication at their lower ends to form a pocket adapted to hold a water seal and to form a continuous passageway connecting said inlet socket member with said outlet socket member, said receptacle being constructed of an elastic plastic material which is sufliciently resilient so that the receptacle can be squeezed and deformed by the hand and operated with a pumping action to loosen and eliminate slime and other matter precipitated within said trap without removal of the trap from the drain pipe.

HILDING H AVRENIUS.

REFERENCES CITED The following references are of record in the ile of this patent:

UNITED STATES PATENTS Name Date Hutchins May 30, 1876 Crosby Aug. 30, 1927 FOREIGN PATENTS Number Number 

